do not drink alcohol in excess with cialis. side effects may include headache, upset stomach, delayed backache or muscle ache. to avoid long-term injury, seek immediate medical help for an erection lasting more than four hours. if you have any sudden decrease or loss in hearing or vision, or if you have any allergic reactions such as rash, hives, swelling of the lips, tongue or throat, or difficulty breathing or swallowing, stop taking cialis and get medical help right away. ask your doctor about cialis for daily use and a 30-tablet free trial. >>> all right. welcome back. on super bowl sunday, sometimes what you see between plays can be just as entertaining, so what are the rules for the most successful super bowl ads of all time? >> we're breaking it down. frank, let's get into it. what is your rule number one? >> you want to be different. you want to show -- you want to be unexpected, and in all the super bowl ads, the best ones are ones that deliver a punch that you're simply not expecting, so let's take a look at the first